Because that's what the people that run those festivals want. If test kits are allowed to be distributed publicly, by extension that means they have willingly "allowed" drug consumption.
That's what I was thinking/hoping for. Indiana cops are fucking assholes so I'd rather not be crossing state lines with an entire pack on hand lmao.eforest / rothbury isn't as big as Bonnaroo and from what I remember many years ago they were pretty chill / lax about personal use stuff but I wouldnt be bringing in an oz. of molly/blow/ket or a book of acid or anything. There will likely be whatever you're looking for for there but if you're not bringing your own stuff you should def bring a personal test kit.